Chair



FIG. 1 is a side perspective view of a chair showing the design, the opposite side being a mirror image thereof;

FIG. 2 is a top perspective view of a chair showing the design;

FIG. 3 is a front perspective view of a chair showing the design; and,

FIG. 4 is a rear perspective view of a chair showing the design.

The broken lines in the drawings are for environmental purposes only and form no part of the claimed design. 

The ornamental design for a chair, as shown and described. 